Alampay, R. B. A., & Libosada, C. M. (2003). Development of a classification framework on ecotourism initiatives in the Philippines. Philippine APEC Study Center Network.
Chicagoスタイル(17版)引用形式Alampay, Ramon Benedicto A., , Carlos M. Libosada. Development of a Classification Framework on Ecotourism Initiatives in the Philippines. Makati City: Philippine APEC Study Center Network, 2003.
MLA(9版)引用形式Alampay, Ramon Benedicto A., , Carlos M. Libosada. Development of a Classification Framework on Ecotourism Initiatives in the Philippines. Philippine APEC Study Center Network, 2003.
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